How Barack Obama stole the #G20 show on Twitter

UNITED States President Barack Obama stole the #G20 show on Twitter, with an overwhelming number of #G20 tweets relating to his movements and university speech.

But Russian President Vladimir Putin was not far behind, Queensland University of Technology researchers found.

QUT researchers used #G20 tweets to map out how the leaders' summit played out on Twitter.

In a first for any G20 event, they analysed tweets sent from inside the declared areas for location-based information then plotted them on an interactive map the public could explore through a website.

They also used all #G20 tweets to create a "G20 Hypometer" showing the world's thoughts of the leaders' summit.

The US, followed by Russian then Australia, were the most talked about countries on Sunday from more than 250,000 tweets between midnight and midday.

The hottest topics on Sunday included a man searched outside the Marriott Hotel after Mr Obama left and retweets of his speech at the University of Queensland.

There were also quite a few celebrity spotters outside the Marriott and Hilton Hotels waiting for Mr Obama and Mr Putin, respectively.